<?php 
$action = Base_url_TuDien.'/'.$lang;
?>
<form class="form-wrapper" method='post' action="<?php echo $action; ?>" accept-charset="utf-8"> 
    <input type="text" name="w" id="search" placeholder="Suchen sie bitte!" value="<?php echo utf8_encode(utf8_decode($wordSearch)); ?>" required >
	<input type="submit" id="submit"  value="search">
</div>
</form>